Half-Life 2: Deathmatch
- Added SLAM, Stunstick and Crowbar
- Added dm_steamlab
- Fixed game_score entity not awarding points
- Added team specific spawn points ( info_player_combine, info_player_rebel)
- Optimized weapon firing effects bandwidth usage

Source SDK
- Added source code for Half-Life 2 multiplayer (Run the 'Create a Mod' link)
- Added ability to create new shaders. See Authoring Shaders In Source for documentation
- Added new tool and source code of DemoTool.exe -- which shows the high-level structure of .dem files
- Added source code for Source Model Viewer included (srcutilshlmviewer)
- Added source for Half-Life 2's Airboat model
- Fixed issues with Steam account names with ".."
- Fixed FacePoser flex sliders
- Hammer limits framerate in 3D views to 300fps -- eliminates overheating problems

Source Engine
- Fixed screenshots/save games being saved in the wrong place
- Fixed hang in rcon server
- Fixed server crash where banned players could retry/cancel quickly during connection
- Fixed crash when a user specifies a heapsize that is too large
- Fixed "play" command crashing on dedicated servers
- Fixed bspzip'd assets in maps not loading properly
- Added FCVAR_CHEAT to r_shadowids
- HLTV port/server can be completely disabled by command line parameter "-nohltv"